JP2000254641A - Water softening device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water softening device suitable for simply softening raw water such as city water containing a hardness component and feeding as water for a user of a small quantity such as a household use. SOLUTION: A resin housing room 6 for housing ion exchange resin 62 and a regeneration substance housing room 7 for housing the regeneration substance 72 for regenerating the ion exchange resin 62, are formed in a container main body, and the water softening device is provided with a raw water inlet part for introducing the raw water into the resin housing room 6 from the outside of the container main body, a discharge port part for discharging the softened water produced with the ion exchange resin 62 to the outside of the container main body, a regeneration water inlet part 5 for introducing the water for dissolving the regeneration substance 72 and producing a regeneration liquid, into a regeneration substance housing room 7 from the outside of the container main body, and a stop valve 8 communicated the regeneration substance housing room 7 with the resin housing room 6 under pressure, and introducing the regeneration liquid into the resin housing room 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a water softener for producing soft water by subjecting raw water containing a hardness component to ion exchange treatment.
In particular, the present invention relates to a water softener suitable for easily softening tap water and supplying it as water for small consumers such as households.

[0002]

2. Description of the Related Art Water from a household bath or washing machine is usually supplied directly from a water source represented by tap water into a human body or a bathtub through a hose, a faucet or the like.

[0003] Tap water contains metal ions such as calcium and magnesium as hardness components, and these metal ions are known to adversely affect the detergency of soap.

That is, the metal ions react with the surfactant in the soap to form an insoluble metal soap, reduce the amount of the surfactant contributing to cleaning, reduce foaming, and lower the detergency. In addition, there is a problem that metal soap is deposited on uneven portions such as human skin and hair. In order to cope with these, it is necessary to remove metal ions such as calcium and magnesium in tap water to soften the water.

Conventionally, as a water softener for softening raw water containing a hardness component, a water softener utilizing an ion exchange treatment with an ion exchange resin is known, but most of them are used for industrial purposes. These water softeners are generally provided with a resin tower filled with a large amount of ion exchange resin, and feed raw water into the resin tower at a low speed in order to increase ion exchange efficiency. Further, if the water softening is continued, metal ions such as calcium and magnesium gradually accumulate in the ion exchange resin, so that the water softening ability is reduced and eventually becomes inactive. Therefore, a salt water tank provided separately from the resin tower is provided, and salt water is introduced into the ion exchange resin from the salt water tank to regenerate the water softening ability of the resin. That is, the resin is regenerated by replacing metal ions such as calcium and magnesium with sodium ions in the salt water. Alternatively, an electric field tank provided separately from the resin tower is provided, and hydrogen ions are replaced by acidic water introduced from the electric field tank to regenerate the resin.

[0006]

SUMMARY OF THE INVENTION A conventional water softener aims at producing a large amount of soft water used as industrial water. Further, from the viewpoint of preventing scale adhesion in a cooling / heating device such as a boiler, it has been developed to meet severe conditions such as a hardness of 0. Therefore, a resin tower filled with a large amount of ion exchange resin and a salt water tank or an electric field tank containing a large amount of salt water for resin regeneration are separately provided, and an air pressure and a solenoid valve are required to drive the water softener. , A large-scale and expensive device using a motor or the like. For this reason, the conventional water softener was not suitable for small-scale consumers such as households to easily and economically soften water.

[0007] On the other hand, when general small consumers such as households use soft water, severe conditions are not required as in industrial use and water softening is lower than that required in conventional water softeners. However, a sufficient effect can be obtained.

The present invention has been made in view of the current state of the prior art, and is intended to easily soften raw water containing a hardness component such as tap water and supply it as water for small consumers such as households. It is an object to provide a suitable water softener.

[0009]

In order to achieve the above object, according to the present invention, there is provided a resin accommodating chamber for accommodating an ion-exchange resin, and provided above the resin accommodating chamber and isolated from the resin accommodating chamber. A container in which a regenerated substance storage chamber for storing a regenerated substance for regenerating the ion exchange resin is formed; and the resin storage chamber communicates with the resin storage chamber from the container wall through the container wall. A raw water inlet for introducing raw water to the container wall, and a discharge port for discharging soft water generated by the ion exchange resin to the outside of the container from the container wall; and A regeneration water inlet section communicating with the regeneration substance storage chamber and guiding water for dissolving the regeneration substance to generate a regeneration liquid from the outside of the container to the regeneration substance storage chamber; And the resin storage chamber A water opening / closing valve which is provided in the passage and is closed during the water softening treatment, and is opened when the ion exchange resin is regenerated, and can be opened to introduce the regenerated liquid in the regenerated substance storage chamber into the resin storage chamber. I will provide a.

According to the present invention, a resin container and a regenerative substance container are formed in one container constituting a water softener, and a water softener having an ion exchange resin regenerating function in one container is obtained. be able to. Also, when softening,
Using the pressure of the raw water introduced from the raw water inlet, the soft water generated in the resin storage chamber can be easily discharged from the outlet. Further, at the time of regenerating the ion exchange resin, the regenerating liquid can be easily introduced into the resin accommodating chamber by the pressure of the water introduced into the regenerating substance accommodating chamber from the regenerating water inlet. Therefore, in any of the cases of water softening and resin regeneration, a driving source other than water pressure is not required, and the operation can be easily performed. As a result, the size of the water softener as a whole can be reduced, and it is extremely suitable for use by small-scale consumers such as households.

Preferably, a perforated sheet is attached to the bottom of the regenerated substance storage chamber, and the regenerated substance is a granular alkali metal chloride larger than the pore diameter of the perforated sheet.

According to the present invention, since the regenerated substance is in the form of granules larger than the pore diameter of the porous sheet, the regenerated substance remaining without being dissolved in the water introduced from the regenerating water inlet is:
It is difficult to pass through the perforated sheet, and there is little possibility of closing the on-off valve. Therefore, a water softener with a small maintenance burden can be provided.

[0013] More preferably, the water softener according to the present invention comprises a perforated plate mounted on the ion exchange resin inside the resin accommodating chamber, and through which water introduced into the resin accommodating chamber is dispersed and passed. Prepare.

According to the present invention, during the water softening, the ion exchange resin is pressed from above by the pressure of the raw water through the perforated plate, so that even if the flow rate of the raw water is increased to some extent, the resin swings. It is possible to suppress. Further, since the raw water introduced from the raw water inlet is dispersed by the perforated plate, the raw water is easily injected into the entire resin, and the ion exchange efficiency can be improved. When the resin is regenerated, the regenerating liquid introduced from the regenerating substance storage chamber via the on-off valve is dispersed by the perforated plate, so that the regenerating liquid is easily injected into the entire resin, and the regenerating efficiency can be improved.

Preferably, the on-off valve includes a flow passage having one end communicating with the regenerating substance storage chamber and the other end communicating with the resin storage chamber covered with an elastic member. During processing, the other end of the flow passage is closed by the elastic member being in close contact with the elastic member, and the elastic member is extended by the water pressure of the regenerating liquid during the regeneration of the ion exchange resin,
The gap is formed between the elastic member and the other end of the flow passage.

According to the present invention, since the opening and closing of the on-off valve can be controlled only by the extension and contraction of the elastic member by water pressure, the on-off valve can be made extremely simple and compact, and the water softener as a whole can be made. The size can be reduced.

[0017]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

First, the structure of the water softener according to one embodiment of the present invention will be described.

FIG. 1A is a plan view of a water softener 1 according to the present embodiment. 1 (b) and 1 (c) are a vertical sectional view taken along line AA and a vertical sectional view taken along line BB in FIG. 1 (a). As shown in FIG. 1, the water softener 1 is attached to a substantially cylindrical container body 2 including a first member 21, a second member 22, and a third member 23, and to a side wall of the second member 22 of the container body 2. Raw water inlet 3 and outlet 4 and the first of container body 2
And a regeneration water inlet 5 attached to the side wall of the member 21.

Male screw portions 221 and 222 are formed on the upper and lower portions of the second member 22 of the container body 2, respectively. A female screw portion 211 is formed on the lower inner surface of the first member 21, and meshes with the male screw portion 221 of the second member 22. A female screw portion 231 is formed on the upper inner surface of the third member 23, and the male screw portion 22 of the second member 22 is formed.
2 is engaged. An integrated container body 2 is formed by the engagement of these screw portions. The container body 2
Is provided with a sealing means (not shown) such as a packing for preventing water leakage. In the present embodiment, 3 KgG
/ Cm ² . The container body 2
Has a diameter of about 90 mm and a height of about 260 mm, and is compact.

The resin housing chamber 6 is formed inside the container body 2 by the second member 22 and the third member 23. One end of the resin housing chamber 6 is fitted to a discharge path 223 formed in the second member 22, and a water collecting pipe 61 extending vertically downward along the central axis of the resin housing chamber 6 is attached.

If the inside diameter of the water collecting pipe 61 is too large, water easily passes through the inside of the water collecting pipe 61, so that the raw water pressure applied to the ion exchange resin 62, which will be described later, is reduced, and the ion exchange efficiency is reduced. . On the other hand, if the inside diameter of the water collecting pipe 61 is too small, a required amount of soft water cannot be obtained. Therefore, the inside diameter of the water collecting pipe 61 is preferably about 10 mm to 25 mm, and is 10 mm in the present embodiment. On the other hand, when the amount of the ion-exchange resin 62 to be housed is small in order to reduce the cost, if the inner diameter of the resin housing chamber 6 is too large, the height of the ion-exchange resin 62 becomes small, and the path through which the raw water passes through the resin 62. , The ion exchange efficiency decreases. In addition, the inner diameter of the resin storage chamber 6 cannot be made too large from the viewpoint of restrictions on the design of the product. If the inner diameter of the resin storage chamber 6 is too small, a required amount of the ion exchange resin 62 cannot be stored. Therefore, the inner diameter of the resin storage chamber 6 is 50 mm to 1 mm.
The thickness is preferably about 00 mm.
5 mm. As described above, the ratio of the inner diameter of the resin storage chamber 6 to the inner diameter of the water collecting pipe 61 is preferably about 2 to 10, and in the present embodiment, the ratio is set to 5.

A collector 611 having an inflow hole is formed at the bottom of the water collecting pipe 61. Collector part 61
When 1 is not arranged near the bottom of the resin storage chamber 6 or is excessively long, water that does not completely flow from the top to the bottom in the ion exchange resin 62 described later will collect in the collector 611, This leads to a decrease in ion exchange efficiency. For this reason, the collector section 611 of the present embodiment is
At the bottom or in the vicinity thereof, the length of which is reduced to about 1/40 to 1/20 of the entire length of the water collecting pipe 61, thereby improving the ion exchange efficiency. In the present embodiment, the length of the collector 611 is about 1/30, that is, 4 mm, while the total length of the water collecting pipe 61 is about 122 mm.

The total area of the inflow holes (not shown) of the collector section 611 is preferably about 1/10 to 1/3 of the total area of the holes formed in the circular porous plate 63 described later. . Thereby, the obtained soft water is collected in the collector section 6.
Since it becomes difficult to pass through the inflow hole of the eleventh, as a result, the water pressure applied to the ion exchange resin 62 is increased, and the ion exchange efficiency is improved. In the present embodiment, a circular perforated plate 63 described later is used.
The total area of the holes formed in the collector section 611 is about 250 mm ² , while the total area of the inflow holes of the collector section 611 is about 1 mm.
/ 6 of about 40 mm ² .

With the above configuration, the resin storage chamber 6 communicates with the discharge port 4 via the collector 611, the water collecting pipe 61 and the discharge path 223, and connects the water conduit 224 formed in the second member 22. It communicates with the raw water inlet part 3 through the.

An ion exchange resin 62 for softening raw water introduced from the raw water inlet 3 is stored in the resin storage chamber 6. In the present invention, since the purpose is to exchange cations such as calcium and magnesium in raw water, the ion exchange resin 62 has the property of taking in cations in the liquid and releasing itself other cations. Cation exchange resin is used. The ion exchange group is generally an acid, and is classified into a strongly acidic cation exchange resin and a weakly acidic cation exchange resin according to its acidity. The ion exchange resin 62 of the present embodiment is a strongly acidic cation exchange resin having an extremely fast exchange rate. The ion exchange reaction formula of the strongly acidic ion exchange resin is illustrated below.

[0027]

Embedded image

[0028]

Embedded image

On the ion-exchange resin 62, a circular perforated plate 63 made of vinyl chloride, which is vertically movable along the water collecting tube 61 and whose outer diameter is substantially the same as the inner diameter of the resin storage chamber 6, is placed. Have been.

FIG. 4A is a plan view of the circular perforated plate 63. FIG. FIG. 4B is a longitudinal sectional view taken along line CC of FIG. 4A. As shown in FIG. 4, a through hole 633 through which the water collecting pipe 61 passes is formed in the center of the perforated plate 63. Through hole 6
Around the perimeter 33, a total of 20 holes 631, 8 near the inner periphery and 12 near the outer periphery of the perforated plate 63, so that the raw water is injected as uniformly as possible into the entire ion exchange resin 62,
In the drawing, it is formed vertically and horizontally symmetrically. In the perforated plate 63 of the present embodiment, 20 circular holes 631 are formed, but the present invention is not limited to this, as long as raw water can be dispersed and injected into the entire ion exchange resin 62. And a perforated plate having various hole shapes, the number of holes, the hole arrangement, and the like. On the lower surface of the circular porous plate 63, a 60-mesh net 632 is stretched to prevent backflow of the ion exchange resin.

Above the resin storage chamber 6, a regenerated substance storage chamber 7 is formed by the first member 21 and the second member 22. The regenerating water inlet 5 attached to the side wall of the first member 21 communicates with the regenerating substance storage chamber 7, and has one end extending near the central axis of the regenerating substance storing chamber 7.

An ion exchange resin 6
2 is stored. The regenerated substance 72 may be an alkali metal chloride that can be exchanged for metal ions attached to the ion exchange resin 62. In the present embodiment, in order to prevent the on-off valve 8 described below from being blocked by a regenerated material 72 described later, the regenerated material 72 is used.
Crystalline salt, which is granular sodium chloride, is used. Crystal salt has a particle size of about 3 mm to 10 mm. The regenerating substance 72 is dissolved in water introduced from the regenerating water inlet 5 to generate a sodium chloride aqueous solution as a regenerating solution. It is preferable to store the regenerated substance 72 in an amount several times the amount of the volume of the regenerated substance storage chamber 7 that saturates the water so that it is not necessary to replenish the regenerated substance 72 every time the regenerating process is performed. For example, the volume of the regenerated material storage chamber 7 is about 500 m.
1 to 100 g (20% concentration) which is the saturation amount
It is preferable to contain about four times the amount of crystal salt.

A perforated sheet 71 is attached to the bottom of the regenerated substance storage chamber 7 in order to prevent the on-off valve 8 from being closed by the regenerated substance 72 remaining without being dissolved. In order to achieve the above object, the pore size of the porous sheet 71 must be
May be smaller than the size of, but in this embodiment,
As the porous sheet 71, a 60 mesh net is used.

The resin containing chamber 6 and the regenerating substance containing chamber 7 are connected to the regenerating liquid introducing passage 2 formed in the second member 22 of the container body 2.
25 can be communicated. Regeneration solution introduction path 22
An on-off valve 8 that opens under pressure is attached to 5.

FIG. 5A is a plan view of the on-off valve 8 according to the present embodiment. FIG. 5B is a longitudinal sectional view taken along line DD in FIG. 5A. As shown in FIG. 5, the on-off valve 8 of this embodiment
Is a check valve, and a screw portion 85 is provided on the outer periphery of the upper portion of the valve body 80.
The screw portion 85 is attached to a screw portion (not shown) formed in the regenerating liquid introduction passage 225 by meshing with the screw portion 85.

The on-off valve 8 has an opening 81, a first flow passage 82 communicating with the opening 81, and a second flow passage 83 having one end communicating with the first flow passage 82. ing. The other end of the second flow passage 83 is covered with an annular elastic member 84. When the water pressure of the regenerating liquid introduced from the opening 81 and flowing through the first and second flow passages 82 and 83 rises to a predetermined value or more, the water pressure causes the elastic member 84 to expand in the radial direction, and the valve body 80 And a gap is created between them. From this gap, the regenerating solution leaks into the regenerating solution introduction passage 225. On the other hand, when the water pressure of the regenerating liquid in the second flow passage 83 decreases, the elastic member 84 contracts in the radial direction, closes to the valve body 80, and closes the end of the second flow passage 83. Thus, the regenerated liquid stays in the flow passage 83.

The elastic member 84 can be formed from various elastic materials such as a rubber-like substance. In the present embodiment, the elastic member 84 is formed from raw rubber having excellent adhesion and durability. The elastic member 84 of the present embodiment has dimensions of an outer diameter of 10 mm, an inner diameter of 8 mm, and a length of 9 mm, and is 0.6 kgG / c.
It is designed to open the end of the second flow passage 83 at a water pressure of m ² or more. As described above, the on-off valve 8 of the present embodiment has an extremely simple and small configuration, and has an excellent advantage that it can be opened and closed only by increasing or decreasing the water pressure.

The on-off valve used in the water softener of the present invention is not limited to the on-off valve 8 of the present embodiment, but various ones can be used as long as they can be opened by pressurizing about the tap water pressure. be able to.

Next, the water softening treatment by the water softener 1 according to the present embodiment will be described.

FIG. 2 is a diagram showing a water softening process by the water softener 1 of the present embodiment. As shown in FIG. 2, raw water supplied from a water tap or the like is supplied to a raw water inlet 3 through a switching valve 9. The raw water supplied to the raw water inlet 3 flows through the water conduit 224 in the direction of the arrow in FIG. 2 and reaches the circular perforated plate 63. Raw water is dispersed in the circumferential and radial directions of the circular perforated plate 63 and passes through the holes of the circular perforated plate 63. Since the holes formed in the circular perforated plate 63 are distributed throughout the perforated plate, the raw water is injected into the entire ion exchange resin 62, and the ion exchange efficiency can be increased. Also,
At this time, since the ion exchange resin 62 is pressed by the water pressure of the raw water via the circular porous plate 63, the swing of the resin 62 can be suppressed even if the supply speed of the raw water is increased to some extent.

Metal ions such as calcium and magnesium contained in the injected raw water are replaced with sodium ions of the resin 62 in the process of flowing downward in the ion exchange resin 62 and are softened. The soft water thus obtained rises in the water collecting pipe 61 by water pressure through the collector 611 and is discharged from the outlet 4 to the outside of the container body 2. The outlet 4 is connected with a water supply hose or the like, and is used for use.

Next, the ion exchange resin 6 according to the present embodiment
The reproduction process 2 will be described. FIG. 3 is a diagram illustrating a regeneration process of the ion exchange resin 62 according to the present embodiment. As shown in FIG. 3, at the time of the regeneration treatment of the ion exchange resin 62, the switching valve 9 is switched so that the raw water is supplied to the regeneration water inlet 5. Raw water that has passed through the switching valve 9 is supplied to the regeneration water inlet 5 through the regulator 10. In the present embodiment, in order to simplify the equipment, the regeneration treatment is performed using the same raw water as the softened water, but water having a low hardness suitable for the regeneration treatment is used. Is also good.

In the regulator 10, the flow rate is adjusted so that a fixed amount of raw water is supplied to the regenerating substance storage chamber 7. In the present embodiment, adjustment is made so that the raw water having a volume approximately twice the volume of the storage chamber 7 flows into the regeneration substance storage chamber 7 for each regeneration.

In a normal use mode, raw water corresponding to the volume of the regenerated substance storage chamber 7 is introduced in advance, and the regenerated substance 7
Crystal salt 2, which was dissolved until saturated, produced an aqueous sodium chloride solution as a regenerating solution. For example, for a volume of about 500 ml
0 g of the crystal salt is dissolved, and a 20% strength saturated sodium chloride solution is produced as a regenerating solution.

When raw water is supplied to the regenerating substance storage chamber 7 through the regenerating water inlet 5 in this state, the water pressure in the regenerating substance storage chamber 7 increases, and the on-off valve 8 opens. Therefore, while the raw water is being supplied, the regenerating liquid flows through the regenerating liquid introduction passage 225 in the direction of the arrow in FIG. For example, when 500 ml of a 20% concentration sodium chloride saturated solution is previously generated in the accommodation room 7, approximately 10% is supplied because double the amount of 1000 ml of raw water is supplied.
1000 ml of sodium chloride solution diluted
Is supplied to the resin storage chamber 6.

Since the pore diameter of the porous sheet 71 attached to the bottom of the regenerating substance storage chamber 7 is smaller than the particle size of the crystal salt as the regenerating substance 7, the crystal salt remaining without being dissolved passes through the porous sheet 71. It is difficult to close the on-off valve 8. The crystal salt remaining without being dissolved is dissolved in the raw water remaining in the regenerating substance storage chamber 7 to generate a new regenerating solution, which is used in the next regenerating. When all of the crystal salt in the regenerating substance storage chamber 7 is used, it is replenished from the regenerant input port 212 provided at the top of the container body 2.

The regenerating liquid supplied to the resin storage chamber 6 reaches the circular perforated plate 63 and is dispersed in the circumferential direction and the radial direction. The dispersed regenerating liquid passes through the holes distributed over the entire circular perforated plate 63 and is injected into the entire ion exchange resin 62. Therefore, the resin regeneration efficiency can be improved.

The sodium ions in the injected regenerating solution are replaced by metal ions such as calcium and magnesium attached to the resin 62 in the process of flowing downward in the ion exchange resin 62, and regenerate the resin 62. The regenerated liquid after the replacement passes through the collector 611 and rises in the water collecting pipe 61 by water pressure, and is discharged from the outlet 4 to the outside of the container body 2.

[0049]

[Embodiment 1] An embodiment will be described below to further clarify the features of the present invention.

First, the evaluation results of the water softening treatment by the water softener according to the present invention will be described.

As the ion exchange resin, a strongly acidic cation exchange resin (Duolite C-20SNA manufactured by Sumitomo Chemical Co., Ltd.) was used.
Of tap water having a hardness of 42 mg CaCO ₃ / L and a flow rate (SV) of 800 (that is, a throughput of 400 L / H).
Water softening treatment was performed in r). Table 1 shows the obtained results.

[Table 1]

Here, the hardness (mgCaCO ₃ / L) is
It is a unit indicating the weight (mg) of calcium carbonate corresponding to calcium ion (Ca ⁺⁺ ) and magnesium ion (Mg ⁺⁺ ) in 1 L of raw water. For water supply, usually 30 ~
100 mg CaCO ₃ / L. In addition, the flow velocity (S
V) is a unit indicating how many times the volume of the ion exchange resin passes per hour, and is usually set to 20 to 80 in the case of water softening for industrial use.

When used as household shower water, the cleaning power is sufficiently improved if the hardness is about 0.5 mg CaCO ₃ / L. According to the present invention, as shown in Table 1, the hardness becomes 1 mg CaCO ₃ / L until the hardness becomes 0.5 mg CaCO ₃ / L.
It turned out that sampling of 000 L was possible.

[0054]

Embodiment 2 Next, the evaluation results of the regeneration treatment of the ion exchange resin of the water softener according to the present invention will be described.

As the ion-exchange resin for regeneration, the same resin as in Example 1 which had been passed through for 3.5 hours was used. As the regenerated substance, 100 g of crystal salt (NaCl) was used, and about 500 ml (40 ° C.) of tap water was flowed into the regenerated substance storage chamber (volume: about 600 ml) to dissolve the water. A regenerating solution composed of a 20% concentration NaCl solution was used. In this state, about 600 ml of dilution water is further introduced into the regenerating substance storage chamber from the regenerating water inlet, and the on-off valve is opened so that the regenerating liquid consisting of about 10% NaCl solution is injected into the ion exchange resin. did. The flow rate (SV) of the regenerating solution was set to 8 (1 L of the regenerating solution), and the solution was injected for about 15 minutes to regenerate. In the present example, an experiment was performed in which the on-off valve was forcibly opened even after the supply of water from the inlet for regeneration water was stopped so that the NaCl solution did not remain in the regeneration substance storage chamber. Thereafter, the ion exchange resin was washed for 5 minutes using 10 L of washing water at a flow rate (SV) of 20. After washing, Example 1
Table 2 shows the results of the water softening treatment under the same conditions as those described above.

[Table 2]

As shown in Table 2, it was found that the regenerated ion-exchange resin was capable of collecting water at a water collection amount of about 800 L before reaching a hardness of 0.5 mg CaCO ₃ / L.

[0057]

As described above, according to the present invention, the resin storage chamber and the regenerated substance storage chamber are formed in one container constituting the water softener, and the ion exchange resin is contained in one container. A water softener having a regeneration function can be obtained.

Further, at the time of water softening, the soft water generated in the resin accommodating chamber can be easily discharged from the outlet by utilizing the pressure of the raw water introduced from the raw water inlet. At the time of regenerating the resin, the regenerating liquid can be easily introduced into the resin accommodating chamber by the pressure of the water introduced from the regenerating water inlet into the regenerating substance accommodating chamber. Therefore, in any of the cases of water softening and resin regeneration, a driving source other than water pressure is not required, and the operation can be easily performed. as a result,
The size of the water softener as a whole can be reduced, and it is extremely suitable for use by small-scale consumers such as households.

[Brief description of the drawings]

FIG. 1 (a) is a plan view showing an embodiment of a water softener according to the present invention. FIGS. 1B and 1C show A in FIG. 1A.
It is the longitudinal section along line A and the longitudinal section along line BB.

FIG. 2 is a diagram showing a water softening process by the water softener shown in FIG. 1;

FIG. 3 is a diagram showing a regeneration process of an ion exchange resin in the water softener shown in FIG. 1;

FIG. 4 (a) is a plan view of a circular perforated plate constituting the water softener shown in FIG. FIG. 4B is a longitudinal sectional view taken along line CC of FIG. 4A.

FIG. 5 (a) is a plan view of an on-off valve included in the water softener shown in FIG. FIG. 5B is a longitudinal sectional view taken along line DD in FIG. 5A.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Water softener 2 Container main body 3 Raw water inlet part 4 Outlet part 5 Regeneration water inlet part 6 Resin accommodation room 7 Regeneration substance accommodation room 8 On-off valve 62 Ion exchange resin 72 Regeneration material

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yoshiaki Akamatsu 23-9 Ikeda-Kitacho, Neyagawa-shi, Osaka Japan Water Research Institute Inc. (72) Inventor Saburo Kimura 23-9, Ikeda-Kitacho, Neyagawa-shi, Osaka Japan Water Research F term in reference (reference) 4D025 AA02 AB19 BA09 BA22 BB11 BB16 BB17 BB18 CA10 DA10

Claims (4)

[Claims] 1. A resin accommodating chamber for accommodating an ion-exchange resin, and a regenerating substance for regenerating the ion-exchange resin, which is provided above and separated from the resin accommodating chamber. A container in which a regenerated substance storage chamber to be formed is formed; a raw water inlet section that communicates with the resin storage chamber from the container wall to introduce raw water into the resin storage chamber from the outside of the container; An outlet for communicating soft water generated by the ion-exchange resin to the outside of the container in communication with the resin accommodating chamber; and from the container wall, communicating with the regenerating substance accommodating chamber from the outside of the container. A regenerating water inlet for guiding water for dissolving the regenerating substance to generate a regenerating liquid in the regenerating substance accommodating chamber; provided in a communication passage between the regenerating substance accommodating chamber and the resin accommodating chamber; Closed during processing, ion exchange tree Water softener, characterized in that it comprises a closing valve capable of introducing said reproduction material housing chamber of regenerant to the resin receiving chamber is open at the time of reproduction of. 2. A recycle material is attached to the bottom of the recycle material storage chamber, and the recycle material is a granular alkali metal chloride larger than the pore size of the porous sheet. 2. The water softener according to 1. 3. A perforated plate mounted on the ion-exchange resin inside the resin accommodating chamber and through which water introduced into the resin accommodating chamber is dispersed and passed. 3. The water softener according to 2. 4. An on-off valve having a flow passage one end of which communicates with the regenerating substance storage chamber and the other end of which communicates with the resin storage chamber covered with an elastic member. In the middle, the other end of the flow passage is closed by the close contact of the elastic member, and when the ion exchange resin is regenerated, the elastic member expands due to the water pressure of the regenerating liquid, and the flow of the elastic member and the flow 2. A gap is formed between the other end of the road and the road.
4. The water softener according to any one of claims 1 to 3.